diff options
Diffstat (limited to 'pdf/pdf_crypt.c')
| -rw-r--r-- | pdf/pdf_crypt.c | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/pdf/pdf_crypt.c b/pdf/pdf_crypt.c index 82295af2..54579570 100644 --- a/pdf/pdf_crypt.c +++ b/pdf/pdf_crypt.c @@ -699,13 +699,47 @@ pdf_authenticate_owner_password(fz_context *ctx, pdf_crypt *crypt, unsigned char return pdf_authenticate_user_password(ctx, crypt, userpass, 32); } +static void pdf_docenc_from_utf8(char *password, const char *utf8, int n) +{ + int i = 0, k, c; + while (*utf8 && i + 1 < n) + { + utf8 += fz_chartorune(&c, utf8); + for (k = 0; k < 256; k++) + { + if (c == pdf_doc_encoding[k]) + { + password[i++] = k; + break; + } + } + /* FIXME: drop characters that can't be encoded or return an error? */ + } + password[i] = 0; +} + +static void pdf_saslprep_from_utf8(char *password, const char *utf8, int n) +{ + /* TODO: stringprep with SALSprep profile */ + fz_strlcpy(password, utf8, n); +} + int -pdf_authenticate_password(pdf_document *xref, char *password) +pdf_authenticate_password(pdf_document *xref, const char *pwd_utf8) { + char password[2048]; + if (xref->crypt) { - if (!password) - password = ""; + password[0] = 0; + if (pwd_utf8) + { + if (xref->crypt->r <= 4) + pdf_docenc_from_utf8(password, pwd_utf8, sizeof password); + else + pdf_saslprep_from_utf8(password, pwd_utf8, sizeof password); + } + if (pdf_authenticate_user_password(xref->ctx, xref->crypt, (unsigned char *)password, strlen(password))) return 1; if (pdf_authenticate_owner_password(xref->ctx, xref->crypt, (unsigned char *)password, strlen(password))) |